DD (Dolby Digital), typically providing multi-channel surround sound.
H.264 (AVC), a standard compression format for high-definition video. Silverstar.2022.MULTi.1080p.HMAX.WEB-DL.H264.DD...
The specific file you've identified has the following technical profile: 1080p (1920x1080 pixels). DD (Dolby Digital)